Metal detector



FIG. 1 is a top perspective view of a metal detector incorporating my new design with the remainder of the metal detector shown in phantom;

FIG. 2 is a front perspective view thereof,

FIG. 3 is a left side elevational view thereof; the opposing side being a mirror image thereof;

FIG. 4 is a back elevation view thereof;

FIG. 5 is a top elevational view thereof; and,

FIG. 6 is a bottom elevational view thereof. 

The ornamental design for a metal detector, as shown and described. 